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Audi A4 Avant vs BYD Seal U comparison

Compare performance (470 HP vs 324 HP), boot space and price (37,200 £ vs 34,300 £ ) at a glance. Find out which car is the better choice for you – Audi A4 Avant or BYD Seal U?

Audi A4 Avant vs BYD Seal U: Key differences

Audi A4 Avant

5 (1 Reviews)
rate
  • markedly more power
  • clearly quicker 0–100 km/h
  • clearly lighter
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BYD Seal U

4.3 (11 Reviews)
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  • only slightly cheaper
  • somewhat more trunk space
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All details on performance, efficiency, range and trunk space can be found in the technical comparison below – including user reviews for both models.

By Achim Sedelmaier

Here’s where it gets real: The technical differences in detail

A4 Avant

Costs and Efficiency:

Looking at overall running costs, both models reveal some interesting differences in everyday economy.

BYD Seal U is only slightly cheaper – starting at 34,300 £ , while the Audi A4 Avant costs 37,200 £ . That’s a price difference of around 2,965 £.

Seal U

Engine and Performance:

Power, torque and acceleration are the classic benchmarks for car enthusiasts – and here, some clear differences start to show.

When it comes to engine power, the Audi A4 Avant offers markedly more power – delivering 470 HP compared to 324 HP. That’s roughly 146 HP more horsepower.

When accelerating from 0 to 100 km/h, the Audi A4 Avant is clearly quicker – completing the sprint in 3.7 s, while the BYD Seal U takes 5.9 s. That’s about 2.2 s quicker.

There’s also a difference in torque: the Audi A4 Avant delivers barely more torque with 600 Nm compared to 550 Nm. That’s about 50 Nm more.

A4 Avant

Space and Everyday Use:

Beyond pure performance, interior space and usability matter most in daily life. This is where you see which car is more practical and versatile.

Both vehicles offer seating for 5 people.

In terms of curb weight, Audi A4 Avant is clearly lighter – 1,595 kg compared to 1,940 kg. The difference is around 345 kg.

Looking at boot space, the BYD Seal U offers somewhat more boot space – 552 L compared to 495 L. That’s a difference of about 57 L.

When it comes to payload, the Audi A4 Avant carries markedly more – 565 kg compared to 410 kg. That’s a difference of about 155 kg.

Who wins the race in the data check?

The Audi A4 Avant is far ahead overall in the objective data comparison.
This result only shows which model scores more points on paper – not which of the two cars feels right for you.

from £37,200
A4 Avant

Audi A4 Avant

  • Engine Type Diesel MHEV, Petrol MHEV, Petrol
  • Transmission Automatic
  • Drive Type All-Wheel Drive, Front-Wheel Drive
  • Power HP 136 - 470 HP
  • Consumption L/100km 4.8 - 9.7 L/100km
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Audi A4 Avant
BYD Seal U

Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis

Audi A4 Avant

The Audi A4 Avant blends elegant, understated styling with practical estate versatility, making it a polished choice for drivers who want both poise and generous cargo space. Inside, the cabin feels premium and tech-forward while the composed driving manners turn routine journeys into a quietly satisfying experience—exactly the sensible indulgence buyers will appreciate.

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A198948_overfull
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Reviews Audi A4 Avant

5 (1 Reviews)
rate

No reviews yet. Share your experience and help others decide.

BYD Seal U

The BYD Seal U is a sleek electric fastback that blends sporty styling with a roomy, tech-focused interior, making it an appealing choice for buyers who want electric performance without sacrificing comfort. It delivers a smooth, composed ride and intuitive features, positioning it as a practical yet modern option in the EV market.

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BYD SEAL U 157
BYD SEAL U 061
BYD SEAL U 079

Reviews BYD Seal U

4.3 (11 Reviews)
rate
Tomi
17 Jun 2026, 18:32:35

Great value for money.
Some small software bugs like any car nowdays.

How do you mainly use this car? (optional): Family car
Efficiency / Consumption & Range
Comfort & Interior
Driving Fun / Performance
Technology & Infotainment
Safety
Practicality / Trunk & Everyday Use
Value for Money
Emily
20 Jan 2026, 22:52:34

Broke down at 200 KM

How do you mainly use this car? (optional): Family car
Efficiency / Consumption & Range
Comfort & Interior
Driving Fun / Performance
Technology & Infotainment
Safety
Practicality / Trunk & Everyday Use
Value for Money

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MG MGS9
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Comparing the BYD Seal U and the MG MGS9 puts two distinct approaches to modern motoring head‑to‑head. I’ll highlight where each model shines — from driving dynamics and tech to practicality and running costs — so you can decide which fits your needs.
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Audi A4 Avant
BYD Seal U

Costs and Consumption
Price
37,200 - 122,500 £
Price
34,300 - 39,800 £
Consumption L/100km
4.8 - 9.7 L/100km
Consumption L/100km
-
Consumption kWh/100km
-
Consumption kWh/100km
12.1 - 20.5 kWh/100km
Electric Range
-
Electric Range
70 - 500 km
Battery Capacity
-
Battery Capacity
-
co2
126 - 220 g/km
co2
0 - 71 g/km
Fuel tank capacity
40 - 58 L
Fuel tank capacity
-

Dimensions and Body
Body Type
Estate
Body Type
SUV
Seats
5
Seats
5
Doors
5
Doors
-
Curb weight
1,595 - 1,820 kg
Curb weight
1,940 - 2,147 kg
Trunk capacity
495 L
Trunk capacity
425 - 552 L
Length
4,750 - 4,782 mm
Length
-
Width
1,842 - 1,866 mm
Width
1,890 mm
Height
1,428 - 1,493 mm
Height
-
Max trunk capacity
1,495 L
Max trunk capacity
-
Payload
510 - 565 kg
Payload
410 kg

Engine and Performance
Engine Type
Diesel MHEV, Petrol MHEV, Petrol
Engine Type
Electric, Plugin Hybrid
Transmission
Automatic
Transmission
Automatic
Transmission Detail
Dual-Clutch Automatic, Automatic Gearbox
Transmission Detail
Reduction Gearbox, Automatic Gearbox
Drive Type
All-Wheel Drive, Front-Wheel Drive
Drive Type
Front-Wheel Drive, All-Wheel Drive
Power HP
136 - 470 HP
Power HP
218 - 324 HP
Acceleration 0-100km/h
3.7 - 9.8 s
Acceleration 0-100km/h
5.9 - 9.6 s
Max Speed
210 - 300 km/h
Max Speed
-
Torque
270 - 600 Nm
Torque
300 - 550 Nm
Number of Cylinders
4 - 6
Number of Cylinders
4
Power kW
100 - 346 kW
Power kW
160 - 238 kW
Engine capacity
1,968 - 2,894 cm3
Engine capacity
1,497 - 1,498 cm3

General
Model Year
2,023 - 2,024
Model Year
2,024 - 2,026
CO2 Efficiency Class
E, F, D, G
CO2 Efficiency Class
A, B
Brand
Audi
Brand
BYD
What drivetrain options does the Audi A4 Avant have?

The Audi A4 Avant is available as All-Wheel Drive or Front-Wheel Drive.

DriveDuel uses data analysis and artificial intelligence to evaluate vehicle data and create content. Content is regularly reviewed and improved. The displayed prices are estimates based on German list prices, adjusted to the respective country’s VAT. Country-specific registration taxes are not included. This information is not legally binding.